Siouxland Mental Health has 5 locations in the Siouxland area. ... PATIENT PORTAL. PHONE: (712) 252-3871 or 877-4-WE-CARE. PO Box 1917, 625 Court Street Sioux City, IA 51102. FAX: (712) 252-3157 or 877-776-3241. Request for Medical Record: 877-792-4231. Nurses ....